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Plume Labs vs Weather Underground

Plume Labs logo

Plume Labs

Weather

Personal air quality tracking and forecasting

From
$179/one-time
Rated
-
Full reviewWebsite
Weather Underground logo

Weather Underground

Weather

Crowdsourced hyperlocal weather from personal stations

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Weather Underground has a free tier, so it costs nothing to try first.
  • Each has a real cost: Plume Labs plume Labs states on its own site that the Flow and Flow 2 hardware are no longer available for purchase, while the Plume Labs App and the Plume API continue to operate; Weather Underground free public API discontinued as of December 31, 2018 with no new developer accounts accepted
  • They diverge on capability: Plume Labs covers Personal air sensor, Weather Underground covers Personal weather stations.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Plume Labs and Weather Underground actually diverge.

Attributes where Plume Labs and Weather Underground differ
AttributePlume LabsWeather Underground
Starting price$179/one-timeFree
Pricing modelone-timefreemium
Free tierNoYes
PlatformsIos, Android, HardwareWeb, Mobile web, Personal Weather Station network
Founded20142003

Identical on both: user rating (Not yet rated), category (Weather).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Plume Labs

  • Personal air sensor
  • Real-time tracking
  • Exposure insights
  • Route suggestions
  • Health tips
  • Mobile app
  • Fitness trackers
  • Hardware support

Only in Weather Underground

  • Personal weather stations
  • Hyperlocal data
  • Historical records
  • Webcams
  • Community forums
  • PWS networks
  • APIs
  • Web support

Both cover

  • Smart home
  • Ios support
  • Android support

What people use each for

The jobs each tool is most often brought in to do.

Plume Labs

  • Professional Work
  • Content Creation

Weather Underground

  • Professional Work
  • Content Creation

Both are used for professional work, content creation, on those jobs the choice comes down to price and fit rather than capability.

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Plume Labs

  • Plume Labs states on its own site that the Flow and Flow 2 hardware are no longer available for purchase, while the Plume Labs App and the Plume API continue to operate

Weather Underground

  • Free public API discontinued as of December 31, 2018 with no new developer accounts accepted
  • Previous enterprise pricing was expensive at $150/month for Cumulus Drizzle plan
  • No longer competitive for developers needing reliable weather API access
  • Service is in wind-down phase with limited future development

Pricing, plan by plan

Plume Labs

$179/one-time
  • Flow 2$179/one-time
    • Personal sensor
    • Real-time tracking
    • App access

Weather Underground

Free
  • FreeFree
    • PWS data access
    • Forecasts
    • Historical data
  • Ad-Free$1.99/month
    • No advertisements
    • Premium features

Which should you pick?

Choose Plume Labs if

  • You need personal air sensor.
  • You work on Ios, Android, Hardware.
  • You also want real-time tracking.
Plume Labs review

Choose Weather Underground if

  • You need personal weather stations.
  • You want to start without paying.
  • You work on Web, Mobile web, Personal Weather Station network.
  • You also want hyperlocal data.
Weather Underground review

Questions people ask

Is Plume Labs or Weather Underground better?
Neither clearly leads. Plume Labs starts at $179/one-time and Weather Underground at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Plume Labs or Weather Underground?
Weather Underground has a free tier; the other does not. Paid plans start at $179/one-time for Plume Labs and Free for Weather Underground.
Does Plume Labs or Weather Underground run on more platforms?
Plume Labs runs on Ios, Android, Hardware. Weather Underground runs on Web, Mobile web, Personal Weather Station network.
Can I use Weather Underground for free?
Yes. Weather Underground has a free tier, so you can try it without paying. Plume Labs starts at $179/one-time.
What is Plume Labs best used for?
Plume Labs is most often used for professional work, content creation.
What can Plume Labs do that Weather Underground cannot?
Plume Labs covers Personal air sensor, Real-time tracking, Exposure insights, Route suggestions. Weather Underground covers Personal weather stations, Hyperlocal data, Historical records, Webcams. Both handle Smart home, Ios support, Android support.

Answered from the vendors’ own pages

Plume Labs: Is the Flow 2 air quality sensor still available for purchase?

No. Plume Labs discontinued the Flow 2 hardware in Spring 2023. It is no longer for sale.

Source
Weather Underground: What happened to the Weather Underground API?

The free public API was discontinued on December 31, 2018, after IBM acquired The Weather Company. The service is now in a wind-down phase with no new developer accounts accepted.

Source
Plume Labs: What air quality products does Plume Labs currently offer?

Plume Labs now offers the Plume Labs App for air quality forecasts and the Plume API for business data solutions. Specific pricing for these services is not disclosed on the website.

Source
Weather Underground: Can I still use Weather Underground's data?

Free API keys are still available for Personal Weather Station (PWS) owners who upload data to the network. General developers need to migrate to alternative weather API providers.

Source
Weather Underground: What was the pricing for Weather Underground's Cumulus plans?

The Cumulus Drizzle plan cost $150/month, which many developers found prohibitively expensive for weather data compared to modern alternatives.

Source
Weather Underground: Does Weather Underground still offer a consumer-facing service?

Yes. The consumer website continues to provide weather forecasts, news, alerts, and access to personal weather station data through the PWS network.

Source
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